Freeze Warning McHenry, Kane, Kendall, Grundy, Livingston Counties and South and West

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Freeze Warning Canceled for Northern Cook and Lake Counties

NWS Chicago highest confidence for freeze in northeast Illinois (NWS Chicago)
NWS Chicago highest confidence for freeze in northeast Illinois (NWS Chicago).

Arlington Heights low temperature forecast to be 36°F from about 5:00 a.m. to 6:00 a.m.

The main forecast concern is the unseasonably cold temperatures and overnight freezing temperatures along with the likelihood of widespread frost late Tuesday night into early Wednesday. Main change to the going Freeze Warning was to cancel the warning for northern Will, DuPage, northern Cook, and Lake Counties, while issuing a Freeze Warning for Livingston and Grundy Counties. Cloud cover forecast has trended more pessimistic and greatly lowered confidence for anything more than very short-lived temps down to 32F in the metro east of the Fox Valley, and in fact do not have any 32F or lower temps forecast in the counties that were removed from the Freeze Warning. Overall change in the message was a reorientation of the headline based off medium-high confidence in 2-4 hours of 30-32F temps with westward extent in the County Warning Area.




Unseasonably cold air mass continues to pour into the area with temperatures only in the mid 40s to lower 50s across northern and central Illinois portions of the CWA as of this writing. The gusty westerly winds have overperformed a bit today, and it`s possible some gustiness hangs on deeper into the evening, also lowering confidence in the temperature forecast with eastward extent. Mid afternoon visible satellite shows extensive strato-Cu back across the northeastern 2/3 of Iowa, with a mainly closed cell look farther north and west and some holes over northern Illinois. Given continued cyclonic flow aloft and another reinforcing wave diving southeast across the upper MS Valley tonight, think that most favored areas to see sufficient clearing overnight for temps to bottom out just below freezing will be the western half of the CWA. Overall think that the duration of freezing temps will be less tonight due to cloudiness hanging on longer area wide, also keeping boundary layer from decoupling more, so not a classic impactful hard freeze as it appears. Continued to withhold any frost mention due to persistent west winds through the night.

The forecast calls for mostly sunny skies in most areas on Tuesday,through northeast Illinois with highs in the mid-50s.




Weather Radar in northeast Illinois was clear.

See also Arlingtoncardinal.com/clouds

Freeze Warning

URGENT – WEATHER MESSAGE
National Weather Service Chicago IL
241 PM CDT Mon Apr 25 2022

ILZ003>005-008-010>012-019-020-260345-
/O.CON.KLOT.FZ.W.0001.220426T0500Z-220426T1200Z/
Winnebago-Boone-McHenry-Ogle-Lee-De Kalb-Kane-La Salle-Kendall-

Including the cities of Rockford, Belvidere, Crystal Lake,
Algonquin, McHenry, Woodstock, Rochelle, Oregon, Byron, Dixon, DeKalb, Sycamore, Aurora, Elgin, Ottawa, Streator, La Salle, Mendota, Marseilles, Oswego, Yorkville, and Plano
241 PM CDT Mon Apr 25 2022

…FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 7 AM
CDT TUESDAY…

* WHAT…A period of sub-freezing temperatures as low as 30 degrees expected late tonight through around sunrise Tuesday.

* WHERE…McHenry, Kendall, Winnebago, Lee, De Kalb, Kane, Boone, Ogle and La Salle Counties.

* WHEN…From midnight tonight to 7 AM CDT Tuesday.

* IMPACTS…Freeze conditions may kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

* ADDITIONAL DETAILS…There is uncertainty on how long cloud cover will linger tonight. If the clouds remain thicker than forecast in some portions of the Freeze Warning area, the threat of a widespread impactful freeze will diminish.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above-ground pipes to protect them from freezing.

 O’HARE FORECAST … 

Tonight: Mostly cloudy, with a low around 36. West wind 10 to 15 mph, with gusts as high as 20 mph.

Tuesday: Partly sunny, with a high near 52. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

Tuesday Night: Areas of frost after 2am. Otherwise, mostly clear, with a low around 33. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.

Wednesday: Patchy frost before 8am. Otherwise, partly sunny, with a high near 44. North wind 5 to 15 mph.

Wednesday Night: A slight chance of rain before 9pm, then a slight chance of rain and snow between 9pm and 3am, then a slight chance of rain after 3am. Mostly cloudy, with a low around 35. East northeast wind 5 to 15 mph. Chance of precipitation is 20%.

Thursday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 49.

Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 43.

Friday: Partly sunny, with a high near 57.

Friday Night: A chance of showers, mainly after 1am. Mostly cloudy, with a low around 46.

Saturday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 60.

Saturday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 49.

Sunday: A chance of showers. Mostly cloudy, with a high near 65.

Sunday Night: A chance of showers. Mostly cloudy, with a low around 49.

Monday: A chance of showers. Partly sunny, with a high near 63.

 LAKE TEMPS … 

SOUTHERN LAKE MICHIGAN WATER TEMPERATURES
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
902 AM CDT Mon Apr 25 2022

LAKE MICHIGAN WATER TEMPERATURES…

CHICAGO SHORE………47.

CHICAGO CRIB……….47.

MICHIGAN CITY……….44.

&&

M IS FOR MISSING DATA THAT IS NORMALLY AVAILABLE.

THE MICHIGAN CITY WATER TEMPERATURE SENSOR IS LOCATED AT A WATER
INTAKE ONE MILE OFFSHORE AND 60 FEET BELOW WATER SURFACE. IT IS READ
EVERY DAY OF THE YEAR.

april.chicagoweatherstation.com

Arlingtoncardinal.com/radar

Chicago Weather Forecast for your MAC/PC/TABLET includes surrounding suburbs.

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